Woven-wire bed-spring tightener.



No. 684,569. Patented Oct. l5, I9Dl. G. S. GBEENLEAF.

WOVEN WIRE BED SPRING TIGHTENEB.

7 (Application filed July 26, 1900.)

(No Model.)

same on line 3 3 of Fig. 1.

., UNITED STATES PATENT OFFICE.

GEORGE S. GREENLEAF, OF PORTAGE, WISCONSIN.

WOVEN-=WIRE BED-SPRING TIGHTENER.

SPECIFICATION forming part of Letters Patent N 0. 684,569, dated October 15, 1901. Application filed July 26-, 1900. Serial No. 24,859- (Ilo model.)

:'5 lumbia and State of Wisconsin, have invented certain new and useful Improvements in W'oven-Wire Bed-Spring Tighteners; and I do hereby declare the following to be a full, clear, and exact description of my invention,

to such as will enable others skilled in the art to which it appertains to use and operate the same, reference being had to the accompa- Q nying drawings, and. to letters of reference marked thereon, which form a part of this deifg scription.

My invention has reference to bed-spring tighteners; and it consists of the improvements hereinafter described and claimed.

In the accompanying drawings, Figure 1 is 2b a plan view, partly in section, on line 1 1 of Fig. 2, showing a portion of my improved woven-wire bed-spring tightener in operation. Fig. 2 is a side view of the same. Fig. 3 is a rear elevation or end view of the Fig. i is an enlarged detail bottom plan of cast-iron corner-piece or tightener-bracket, representing the same fastened on left rail of spring-frame. Fig. 5 is a transverse section on line 5 5 of Fig. 2, showing the clamp with thumb-screw e fastening tightener-bracket B to rail of frame A. Fig. 6 is a detail perspective showing right corner-piece of tightener-bracket,which is manufactured of cast-iron or other metal,

of which bracket-tighteners there are two for each machine, a right and a left. Figs. Yand 8 are plan views showing the inner corrugated sides of spring-clamping rails. Fig. 9 is a cross-section of the same on line 9 9 of Fig. 1,

showing a portion of clamp with woven-wire spring between it.

In the drawings, A is the rail forming the rail to the bed-spring.

B is the tightener-bracket, of which in this 5 instance only one is illustrated, it being understood that when the device is in operation two of these brackets, one on either of the two opposite corners of the spring-frame A, are used and held to the side rail A by means of a thumb-screw e, and when it is desired to tighten a bed-spring the tightener-braclrets B are first fastened to the spring-frame A by means of the thumb-screw c. Then the spring clamping rails F and G are placed one on the lower and the other on the upper side of the bed-spring and fastened together thereon by means of bolts h. The corrugationsfin the upper and g in the lower clamping members F and G serve to pinch and hold the springs firmly therein and prevent any liability to slip. The projecting ends of clamprails F and G are then placed in stirrup O, and in this instance only one is illustrated, it being understood that when the device is in operation two of these sfirrups, one on either of the two opposite ends of said clamp, are used, and which said stirrups G are provided with rearwardly-extending screw threaded draw rods D. These draw-rods D pass through any one of the series of holes I) in the upper projecting arm I) of the tightener=bracket. The hand-crank E, having a screw-threaded bore to correspond with the screw-threaded draw-rod D, is then run onto said rod D, and while in this instance only one hand-crank E is illustrated it is to be un derstood that when the device is in operation two of these hand-cranks, one on either of the two draw-bolts D, are used. After this is done the permanent clamping-strip ais removed from the foot of the spring-frame, thus releasing one end of the springs from the frame. The spring is now in position to be tightened, and it is now onlynecessary to revolve the hand-crank E on the threaded draw-bolt D, thereby tightening the wovenwire spring to the desired tension. The free end of the spring, which projects through the clamping-rails, is then placed upon the end rail of the spring-frame and the permanent retaining strip a is again fastened down thereon and the operation is completed.

To remove the machine after having completed thetightening of the bed-spring, it is only necessary to screw off the hand-cranks E, remove the thumb-screws e and bolts h, and the whole device can then be detached.

Having thus described my invention, I claim- In a detachable woven -wire bed-spring tightener, a clamping-bracket adapted to be fastened by a thumb-screw adapted to said bracket, and so arranged as to hold the same upon the side rail of a bed-spring frame,

forming a brace through which a draw-bolt D passes, and so constructed that draw-bolt 1), when passed through holes in the bracket will receive hand-crank E in threaded c0nnection with draw-bolt D; a stirrup with a screw-threaded rod passing through an aperture in said bracket and adapted to be engaged by a screw-threaded hand-crank, and

clamping-rai1s for temporarily holding one 10 end of said woven-wire bed-spring and adaptcounty of Cook and State of Illinois, in the I 5 t presence of two witnesses.

GEORGE S. GREENLEAF. Witnesses:

TEHR W. NILSSON, CHARLES FRANZEN. 

